A NetLogo replication of the model presented in the following papers:
Smaldino PE, Schank JC, McElreath R (2013) [Increased costs of cooperation help cooperators in the long run](http://www.journals.uchicago.edu/doi/abs/10.1086/669615).
*The American Naturalist* 181: 451–463.
Smaldino PE (2013) [Cooperation in harsh environments and the emergence of spatial patterns](http://www.sciencedirect.com/science/article/pii/S0960077913000921). *Chaos, Solitons
& Fractals* 56: 6–12.
This is a companion discussion topic for the original entry at https://www.comses.net/codebases/5500/releases/1.0.0/